E vapo rust

[glenn in camino]

Originally Posted by glenn in camino

Ok today it's been in there for 3 days and I've driven the car to warm in up. I'm going to drain it today and flush it out several times. Tomorrow we're going on a club tour and when I get home I'll flush it again. Hope it worked.

On the tour Friday the weather was hot and my Model A did boil over. I cleaned up the car and refilled the cooling system with Evaporust and think I'll leave it in for at least a month.

[RonC]

The evaporust will eat rust but won't unclogged a radiator clogged with old grease and sedimentation. Take it off the car and fill it with a lye solution for about 20 minutes and rinse out well (backflush with air and water). Repeat a second time for 20 minutes again. Don't leave it in to long.

[Dollar Bill]

Originally Posted by glenn in camino

On the tour Friday the weather was hot and my Model A did boil over. I cleaned up the car and refilled the cooling system with Evaporust and think I'll leave it in for at least a month.

A week is more than enough time for Evaporust to work. As RonC stated, I fear your radiator is clogged. If flushing doesn't work, the guaranteed solution for cleaning a radiator is rodding it out.

[nhusa]

I put 32 oz of thermocure and 2 gallons of water in the radiator of my Model T today.
I noticed that the overflow tub turned copper instead of black in a few minutes. I warmed it up a couple times and will let it sit until next weekend.

Then I will drain the Model A radiator, put the mixture in it, and top it off with more water.
I figure I will need to leave it in for about a week.

[mrtexas]

Buy some Rust911, works out to $4/gallon vs Evaporust $30/gallon. Same stuff and works the same. You buy a gallon of concentrate that makes 16 gallons for $60 shipped.

[kelley's restoration]

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Originally Posted by Dollar Bill

Leave it in as long as you want. It only attacks rust.

not advised...
I left it in a can and it ate through the can and soaked into my bench
put it in plastic containers if possible
tk

[nhusa]

Originally Posted by mrtexas

Buy some Rust911, works out to $4/gallon vs Evaporust $30/gallon. Same stuff and works the same. You buy a gallon of concentrate that makes 16 gallons for $60 shipped.

Where were you 24 hours ago.

I Already spent twenty bucks for Thermocure.

[Big hammer]

Originally Posted by glenn in camino

On the tour Friday the weather was hot and my Model A did boil over. I cleaned up the car and refilled the cooling system with Evaporust and think I'll leave it in for at least a month.

Not sure how good Evaporust is as an engine coolant? Works good on rust, only rust, will not attack soild metal. It turns rust to a very fine, smaller than sand

[mrtexas]

Originally Posted by Big hammer

Not sure how good Evaporust is as an engine coolant? Works good on rust, only rust, will not attack soild metal. It turns rust to a very fine, smaller than sand

Dissolves the iron, the carbon remains and is black

[Dollar Bill]

Originally Posted by kelley's restoration

not advised...
I left it in a can and it ate through the can and soaked into my bench
put it in plastic containers if possible
tk

Could there have been rust inside the can? The PH is somewhat neutral and shouldn't attack clean metal.

[nhusa]

I asked Evaporust about a time limit on leaving Thermocure in my T with an aluminum water pump, old radiator and old cast iron block.

David Lewis responded and said "There is no issue with leaving Thermocure in the system for any length of time."

[Tom Wesenberg]

Someone mentioned using LYE in the radiator, but won't that eat the solder?

[Dollar Bill]

Back in the day when you could get your radiator hot tanked, wasn't it caustic soda they used in the tank?

[wjeiler]

On this topic, I have a red, rusty sludge in my 30's radiator which I am assuming is a combination of grease/oil and rust. Would you recommend flushing first with a dish detergent/water mixture to cut the sludge, then the EvapoRust? Any other suggestions? Thanks a million

[RawhideKid]

On this topic, I have a red, rusty sludge in my 30's radiator which I am assuming is a combination of grease/oil and rust. Would you recommend flushing first with a dish detergent/water mixture to cut the sludge, then the EvapoRust? Any other suggestions? Thanks a million

I have always used Dawn dish washing liquid first to cut the oil/grease, then let it soak a day or two with straight vinegar, just be sure when you dump the vinegar out the top! I lay mine on the top of the short wall next to the driveway.

[wjeiler]

So RawHideKid, you recommend removing the radiator for the flush? If so, how to do you typically address any of the sludge that may be in the water jacket?

[RawhideKid]

Originally Posted by wjeiler

So RawHideKid, you recommend removing the radiator for the flush? If so, how to do you typically address any of the sludge that may be in the water jacket?

Good question, since you have the radiator off you can plug the lower hose and fill up the engine. Once you soak the engine, you can use a pressure washer or a steam cleaner or a pool/sump pump and flush from the top down. The trick is getting the crud broke loose to get it flushed out.

The reason I do not use vinegar in the engine is because even if you flush that out with baking soda, there can still be enough left to eat at the block, and it WILL continue to chew on the iron.

Remember to save the initial release of the evapo-rust as it can be used over and over again.

There have been plenty of discussions and pictures of items used to do this.

The last time I had the head off, I even went so far as to use a bore brush to sweep out the rear areas around #3 and #4 cylinders and use a magnet to pull out the crud. That proved worthwhile netting me a lot more rust flakes than I would have imagined.